TS EAMCET · Physics · Communication System
A transmitting antenna has a height \(20 \mathrm{~m}\). What will be the height of receiving antenna, if the maximum distance between them for satisfactory communication in line-of-sight (LOS) mode is \(40 \mathrm{~km}\) ? (The earth radius is \(6400 \mathrm{~km}\).)
- A \(25 \mathrm{~m}\)
- B \(30 \mathrm{~m}\)
- C \(60 \mathrm{~m}\)
- D \(45 \mathrm{~m}\)
Answer & Solution
Correct Answer
(D) \(45 \mathrm{~m}\)
Step-by-step Solution
Detailed explanation
Given, height of transmitting antenna \(h_t=20 \mathrm{~m}\), maximum line of sight (LOS) distance between receiving antenna and transmitting antenna \(=40 \mathrm{~km}\) and radius of Earth, \(R=6400 \mathrm{~km}\). The maximum line of sight distance,…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The half-life of \({ }_{84}^{209} \mathrm{P}_0\) is 103 years. The time it takes for \(100 \mathrm{~g}\) sample of \({ }_{84}^{209} \mathrm{P}_0\) to decay to 3.125 \(\mathrm{g}\) isTS EAMCET 2018 Easy
- Two particles \(A\) and \(B\) of masses ' \(m\) ' and ' \(2 m\) ' are suspended from massless springs of force constants \(K_1\) and \(K_2\). During their oscillation, if their maximum velocities are equal, then the ratio of amplitudes of \(A\) and \(B\) isTS EAMCET 2013 Easy
- The heat energy required convert \(10 \mathrm{~kg}\) of ice at \(-10^{\circ} \mathrm{C}\) into water at \(0^{\circ} \mathrm{C}\) is (specific heat capacity of ice \(=0.5 \mathrm{cal}\) \(\mathrm{g}^{-1}\) and latent heat of fusion of ice \(=80 \mathrm{cal} \mathrm{g}^{-1}\) )TS EAMCET 2023 Medium
- The frequncy of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments \(M_1\) and \(M_2\) is \(6 \mathrm{~Hz}\) when like poles are tied and it is \(2 \mathrm{~Hz}\) when the unlike poles are tied together, then the ratio \(M_1: M_2\) isTS EAMCET 2010 Medium
- When a zener diode is used as a regulator with zener voltage of \(10 \mathrm{~V}\), nearly five times the load current passes through the zener diode. What should be the series resistance for the zener diode. If load resistance is \(2 \mathrm{k} \Omega\) and the unregulated voltage supplied is \(16 \mathrm{~V}\).TS EAMCET 2019 Medium
- In a time ' \(t\) ', the amplitude of vibrations of a damped oscillator becomes half of its initial value, then the mechanical energy of the oscillator decreases byTS EAMCET 2024 Easy
More PYQs from TS EAMCET
- A circular disc of radius \(R\) and thickness \(\frac{R}{6}\) has moment of inertia \(I\) about an axis passing through its centre and perpendicular to its plane. It is melted and recasted into a solid sphere. The moment of inertia of the sphere about its diameter as axis of rotation is :TS EAMCET 2003 Medium
- Water is filled in a tank up to a height of 20 cm from the bottom of the tank. Water flows through a hole of area \(1 \mathrm{~mm}^2\) at its bottom. The mass of the water coming out from the hole in a time of 0.6 s is
(Density of water \(=1000 \mathrm{~kg} \mathrm{~m}^{-3}\) and acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )TS EAMCET 2025 Medium - A charged particle \((\) charge \(=q\); mass \(=m)\) is rotating in a circle of radius \(R\) with uniform speed \(V\). Ratio of its magnetic moment \((\mu)\) to the angular momentum \((L)\) isTS EAMCET 2016 Easy
- If the length of a rod is measured as 830600 mm, then the number of significant figures in the measurement isTS EAMCET 2025 Easy
- In Young's double slit experiment using monochromatic light of wavelength the intensity of light at a point on the screen where the path difference is , is What is the intensity of light at a point where the path difference is ?TS EAMCET 2021 Medium
- A particle is projected from the ground with an initial speed of \(v\) at an angle of projection \(\theta\). The average velocity of the particle between its time of projection and time it reaches highest point of trajectory isTS EAMCET 2013 Medium